Packing ring



Oct. 9,1923.

V. E. NELSON PACKING RINGl Filed Aug. 18, 1919 2 sheets-sheet 1 Vieweg/W991i' @www g 1mm Oct. 9 1923.

1,470,585 NELSON i PACKING RING4 Filed Aug. 18, 1919 2 Sheets-Sheet 2 Juve/nio@ (Broun/1J Patented of.9,1923.

. acter to prevent preserved.- A further ob]`ect Aof UNITED STATES V y 1,470,585 PATENT oi-i-icE VICTOR E. NELSON, 0F STRATHLIOBE, MICHIGAN.

v PACKING RING.

Appiicaami inea August is, 1919. semi iro. $13,093.

To ZZ whom it may concern:

. Bey it known that I, VICTOR E. NELSON, a citizen of the United States, residing at Strathmore, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Packing Rings, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which forni a part of this specification.

This invention relates to vmetallic packing for use on shafts and other rotating members and has for its object to provide a metallic packing ring and cage of a charleakage of oil from the bearings or case through which the 'shaft may project and in which the shaft may proJect and in which wear is ordinarily comv 'oint continuously the invention is to providea metallic packing ofj the character stated and a cage for supporting the packing in the desired relation with the shaft and in which the seats for the packing ringare provided, a feature of the construction being that the packing ring and parts of the cage are first assembled asa unit and adapted to bevpositioned as a unit in the required relation with the bearing and shaft.

pensated for and a tight -By the unit construction stated as an object V of the invention, the ring is always mainy tainedin its desired and particularly assembled relation with the seat.

In the construction set forth and shown in U. S. Patent No. 1,120,400 of Dec. 8, 1914, to myself and Mr. Reynold G. Nelson, an expanding packing ring is provided about a shaft which seats against a collar on the shaft and against a place secured to the bear- I ing'end. With such construction in case of repair or disassembly of the several parts, it is oftentimes diiiicult to replace the parts in the exact original relationship. variation of two* or three thousandths of an inch being sufficient to destroy the usefulness of the packing. With the packing and ca e herein disclosed, particularly by reason o Vthe 'assembly of the several parts as a unit, the

@ring is never -disassembled relative to its seat but is maintained strictl 'in desired -relationship therewith, and t e principal feature of `this invention therefore, is a con-v struction of an expanding ring member seatingbetween two parts of the cage member acter being and the whole being capable of being hanl dled 'as a unit after it has once been assembled. These objects and the several novel features of the invention are hereinafter more fully described and claimed and shown` in the accompanying drawingsv in which- Fig. 1 is a vertical longitudinal section of a shaft and bearing member-showing my improved unit construction of a packing rinlg and cage.

ig. 2 is a cross section taken on line 2--2 of Fig. 1.

Fig. 3 is a cross section taken on line 3-3 of Fig. 1.' v

Fig. 4 is a cross section of van alternative form of construction of the cage. y

Fig. 5 is 3a detail in perspective of the parts of the packing rings.

Fi 6 isa detail in perspectivepf the assemb ed rings. i

`Fig.7 is a perspective view of a washer adapted to prevent displacement of the several parts. l

The packing ring or rings may be of any approved type as for instance such as is shown in said U. S. Patent mentioned No. 1,204,400 which is super-expanded in charformed of spring metal or the rings may vin Figs. 5 and 6. The ring is composite in type having an inner member 1 and ain-outer member 2. The inner member consists of two similar half circular parts 3 and 4 having a beveled face 5, each of said members being provided with an outwardly extending pin 6 on the periphery thereof. The outer member 2 consists of two half circular arts 7 and 8 provided with a coned face 9 w ich, when the outer ring is placed about the periphery of the inner members, is .coextensive with the coned face 5 of the inner members. The parts 7 and 8 of the outer members are not completely half circular in form, the ends thereof being spaced asriwill be understood from 6 when assembled on the outer -ring into whichspace extend the pins 6, and this prevents ment of the inner members 3 and 4 relative tothe outer members so that the interstice between the ends of the inner member may not be so positioned as to register with the spacing or interstice'between the two parts of the outer member. These rings may be formed of 'any desired material as cast or malleable iron and are not expensive as in di lacesp A105 the construction shown in the said former --this tendency to expand either of the composite rings as herein described or of a super-expanding ring, if such be used, I provide a cage consisting of an inner member 10 and an outer member 11. The inner member 10 is of a character to fit the shaft as will be understood from Fig. 1. inner member is cylindrical in form having at one end the laterally projecting circular flange 12 and the body thereof extends through an aperture at the center of 'the member 11 being provided with a circumferential groove 15 which, when the membersare assembled, is just outside the point of the body' of the member 1() engaged or contacted by the member 11. The member 11, it will be noted, is provided with a coned seat 13 and between this coned seat of the member 11 and the flange 12 of the member 10 is carried vthe packing ring' and the chamber formed between the two parts is practically triangular in cross Section, and the rings tend to expand outwardly between these two members, the coned face of the rings tightly engaging the coned seat 13 of the member 11 and the flat end of the assembled rings engaging thei Ha-nge 12 whereby all leakage of oil between the two members is prevented and as the inner member lits the shaft no leakage of oil may occur between the member 10 and shaft.- Thus the bearing shown in Fig. 1 is securely packed. After nthe members are assembled with the rings in position a washer 14 is set into the groove 15 of the sha-ft member 10 which prevents possible displacement of the desired relative position of the members and rings. This method ofpositioning a washer in a groove is not of itself new and other methods of securely fastening the two members in relative position may be employed but due to simplicity and efficiency of the described method of fastening I prefer to use the method described. For this purpose a washer is bent at the. center to a V shape as shown in Fig. 7 which will permit the washer being placed on the member 11 and the two rings 17 and 18 of the washer by expanding operation are then `forced over into 4the groove therefor and, when the washer is seated inthe groove, it is practically imposf -sible to disassemble the members without use of a chisel or a member destructivev to the parts, thea purpose being to so fasten the several members in the assembled relation as will best prevent tamperingwith the device or disassociation of the members under any ordinary condition. l l

The cage may be formed of sheet metal as is shown Vin Fig. 1, the outer member 11 having a. flange 19 to engage over the end of the bearing case from which it mafy be readily disassociated or disassembled rom the shaft. In this inst-ance the member 10 is of a diameter to closely engage the shaft and in order to insure rotation of the member 10 with the shaft a tongue 2() is provided by slitting the outer end longitudinally on one side which is bent downward into the keyway 21 of the shaft.v Thus the member 10'is made to rotate with the shaft while the member 11 is stationarily supported on the end of the housing which in the case illustrated is a. housing for the bearings 22 of the shaft. It is further to be noted that the internal diameter of the assembled ring member is greater than the outer diameter of the tubular portion of the member 10. 'lhus the said ring does not ride on the rotating surface at that point. The flat end of the ring member, however, engages the flange 12 which is rotatable while the coned face engages the stationary seat 13. Due to the length of the coned face being greater than the length of the flat side of the rings engaging the member 12 there is greater friction between the coned face of the assembled rings and the seat therefor than exists between the flat face and flange 12. For this reason the rings remain stationary while the member 10 and flange 12 1 thereon rotate.

1. The type of bearing illustrated in Fig.

4 is of a character ordinarily used with ,line shafting in which it is necessary to move the shaft longitudinally of the bearing to position the same. For this reason the member 32 is of a diameter permitting such longitudinal movement and, in order to prevent a leakage of oil from the bearing andv tubular memberv 32 and further for the purpose of preventing an accidental longitudinal movement of the shaft in`-the bearing the outer end of the member 32 is 4formed with pipe threads on which, when the shaft hasbeen positioned, is .placed a nut 34'. The

turning of the nut onto' the threaded end of the member 32 'contracts the said end into fixed relation with the shaft causing the placement. In all other respects the cage is,

identical with the iirst instance cite-d shown in Fig. l and the function of the packing ring and its relationship with the two parts of the cage is identical in either case cited. It is further evident that the type of bearing with which the packing ring and cage may be' employed may be of any type desired either the ball or roller type shown in the accompanying drawings or of other known types, the function of the. packing ring and cage having no relationship to the particular type of bearing as its function is solely that of preventing a leakage of oil from the bearing.

'Bhe coned seat in the member 11 or the member 3() is of the same diameter as the normal diameter of the coned face of the composite ring. lith the spring member 9 introduced in the interior of the inner mem` ber of the composite ring, the tendency is to expand outward against the seat 13 or 31 causing it to rise into engagement lwith the liange of the member 10 or 32 as the case may be. In the use of the case of the ring of the said U. S. Patent No. 1,120,400 of Dec. 8, 1914, the normal diameter of the coned ring should be greater than that of the coned seat in order that when the parts are assembled the tendency of the ring is to wedgeoutwardly between the coned seat and flange of the inner cage member.

Having thus described my invention, what l claim and desire to secure by Letters Patent of the United States isl. A metallic packing for rods, shafts and the like comprising the combination with a shaft and its bearing, of an inner cage member removably. secured to the 'shaft in a manner to rotate therewith and prevent leakage of oil therebetween, an outer cage member in overlapping relation with the inner member and providing a circular recess, the outer cage member being secured to the bearing, an expansible ringmember in the said recess, the shape of the recess and ring in cross section being such that the ring in expanding assumes a Wedging relation between the members, and means for securing the inner and outer cage members together asaunit.

2. A metallic packing comprising an expanding ring member, an outer and an inner cage member, the outer member beingl vstationarily held and the inner member being relatively rotatable, a seat for the ring provided between themembers with which the ring assumes a wedging relation preventing a leakage of oil between the members, and means for securing the cage menibers together.

3. A metallic packing comprising an expanding ring member, an outer and an inner cage member, the outer member being stationarily held relative to the inner member and overlapping the inner member providing a recess between the members for the ring, the ring wedging in the recess due to its form and tendency of the ring to expand, and means for securing the cage members in assembled relation.

4. A metallic packing comprising an eX- panding ring member, an inner and an outer cage member therefor one being rotatable relative to the other` one of the members having a laterally extending iiange and the other of said members extending thereover providing a circular recess in which the ring expands preventing a leakage between the members.

5. A metallic packing for rods, shafts and the like comprisingv the combination with a shaft and its bearing,I of an inner cage member removably secured tothe shaft in a manner to rotate therewith and prevent leakage therebetween, said member having a cylin` drical portion fitting the shaft and an outwardly extending iiange at the inner end, an outer cage memberfixedly attached tothe bearing for the shaft and having a part eX- tending in an overlapping relation with the said liange of the inner member forming therebetween a circular recess-substantially triangular in cross section, a ring-like mem` ber of a shape to fit in the recess in Wedging relation between the outer and inner cage members, and means for supporting the cage members in the 'assembled relation to permit positioning or removal of the packing as a unit structure. 4

6. A metallic packing comprising an expanding ring member having a coned face and a face at a right angle to the longitudi= nal axis of the ring, an outer cage member having a coned seat for the said coned face of the ring, an inner cage member having a laterally extending flange providing a seat for the other face of the ring, the tendency of the ring to expand between the seats -tightly wedging the same therein to prevent a leakage of fluid, and means for securing the cage members together providing a unit construction permittlng the assembling or disassembling of the saine Without disassociation vof the-several parts.

7. A metallic pac-king comprising an eX- panding ring member,'an outer Iand an inner cage member having portions in overlapping relation forming a circular recess triangular in cross section for the ring, one of the said cage members being rotatable relatively to the other and the ring member assuming a wedging relation in the recess tending to force the members apart, one of the said me'mbers extending through the other, and

y means limiting the extent of relative movement of the members by the ring.

8. A metallic packing for rods, shafts and the like having a bearing, comprising the combination with an expansible ring like member, of an inner cage member secured to the shaft and having a, laterally extending flange, an outer cage member secured to the bearing and overlapping the said flange portion providing a circular recess for the ring, the shape of the ring and recess in cross sei-tion being such that the ring in expanding assumes a we-dging relation between the members preventing leakage of oil, and means for securing the cage members together. A

9. A metallic packing for rods, shafts and the like having a bearing and housing therefor, comprising an expansiblering member, an inner cage member secured to the shat't in a manner to p-revent a leakage of oil therebetween, a laterally` extending flange on the said inner member, an outer cage member adapted to be secured to the housing and overlapping the said flange, the ring like member having a. coned face and the overlapping portion of the outer member having a similar shaped seat for the ring, the tendency of the ring to expand causing the same to ride outwardly against the flange, and means for securing the cage members in the desired relation.

10. A metallic packing for rods, shafts and the like having a bearing and housing therefor, comprising an expansible ring member, an inner cage member having a body secured to the shaft in a manner to prevent a leakage ot oil therebetween, a laterally extending flange on the said member an outer cage member adapted. to be secured te the housing and overlapping the said flange, the ring like member havin a ooned face and the said overlappin portlon of the outer member having a simi ar shaped seat for the ring, the expansion of the ring in the seat causing the same to ride outwardly y of the inner member housing therefor, comprising an expansible v ring member, an inner cage member havin a. tubular portion through which the sha t extends, the said member being secured to the shaft in a manner to rotate therewith and to prevent a leakage of oil therebetween, an outer cage member adapted to be secured to the housing, the inner member having a laterally extending flange and the outer member overlapping the same and being apertured to receive the body of the inner member and providing a circular recessv of triangular form in cross section between the overlapping portions of the members, the/ring being of a shape to fit the recess audits tendency to expand causing the same to assume a wedging relation between the members tending to force the same apart, means limiting the extent of movement apart of the members by the ring, said means holding the members and ring in the desired relationship permitting the handling of the same as a unit.

12. In a metallic packing, a composite ring member formed of several parts adapted to be assembled in ring li e shape, a spring member positioned within the ring tending to cause the parts to expand and the said parts forming a composite expansible ring member. and a cage for the said member formed of two4 parts shaped to provide a recess for the ring in which the said ring seats by its tendency to expand.

In testimony whereof, I sign this specification.

VICTOR E. NELSON. 

